Channel cementing machine



Original Filed Oct. 1, 1935 3 Sheets-Sheet l VE/V TUP PM) m Nov. 9, 1937. w. 1.. M KENZlE CHANNEL CEMENTING MACHINE Original Filed Oct. 1, 1955 3 Sheets-Sheet 2 v /v TUE Nov. 9, 1937. w. L. MacKENZlE 2,098,253

CHANNEL CEMENTING MACHINE Original Filed Oct. 1935 5 Sheets-Sheet 3 UNITED STATES PATENT OFFICE CHANNEL CEMENTING MACHINE Wilbur L. MacKenzie, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Originalapplication October 1, 1935, Serial No.

43,064. Divided and this application Novemher. 18. 1936, Serial No; 111,453. In Great Britain September 25, 1935 13 Claims. (Cl. 12-80) This invention relates to machines for applythis end, there is provided in the illustratedform ing cement to the channels of shoe soles after of the machine, an oscillated flap-pressing finger the outseam has been formed, thereby to atby means of which the flap is supported in close tach the channelfiaps to the sole. The invenrelation to the sideface ofthe nozzle and the tion is herein illustrated as embodied in a mapressure of the finger intermittently removed,

chine of the extrusion type. thereby to facilitate the feed of r the shoe. 'A s It is well understood in the manufacture of illustrated also, means is provided for controlling shoes that a seam, for attaching the outsole the oscillations both as to extent and as to the maybe formed at the bottom of a channel out time of starting and stopping, the arrangement 10.- in the sole and that after the seam has been being such that the finger, when the driving formed, the channel flap may be cemented to the force is removed, stands in an open position to sole to hide the seam. Prior to the formation facilitate presentation and removal of work from of the seam, the channel fiap is liftedto facilitate the machine. The illustrated arrangement of the sewing operation, this usually being done the machine provides a feed roll positioned at 5,. while the sole is in temper, and as a result, the one side of the nozzle arranged to engage the ,5

flap is wrinkled transversely of its length, especiupper of the lasted shoe while the oscillated flapally around the toe end of the sole. When the pressing finger is positioned at the other side of time comes for the application of cement to the the nozzle. channel, specifically to the channel base and the These and other features of the invention will 2(] inside of the channel flap, the fiap may be dry be described in the following specification, taken and as a result quite stiff and hard. That being in connection with the accompanying drawings, the case, the under surface of the fiap provides a in which wrinkled surface. Obviously, the contour and Fig. 1 is a side elevation of one embodiment of outline of the sole are both irregular. Coating the invention, showing a machine with a side shoe channels has commonly been performed by plate removed to disclose the parts within a 25 means of a rotary brush. With the rubber cehollow frame;

ments ordinarily employed, this sort of an ap- Fig. 2 is a detail view, shown on a larger scale, paratus is very successful. However, if the maof control mechanism for a flap-lifting finger; chine is to be used with cements of the pyroxylin Fig. 3 is an angular viewof the operating tools, 30. type or the polymerized chloroprene type, one showing the presentation of a piece of work to form of which is commonly known as Du Prene, the machine;

then it is essential to avoid soiling the outside of Fig. 4 is a detailed section through an eccntric the shoe because of the difiiculty in removing connection in the drive of the flap-lifting finger; such cements from the shoe upper, for example. Fig. 5 is an angular view on a much larger It is, furthermore, even more essential that scale of a nozzle, with a cover plate removed; 35 exactly the desired quantity should be applied Fig. 6 is a similar view of a modified conin order that there may be no squeeze-out when struction in which two plates are employed;

the channel flap is pressed into place. Fig. 7 is a side elevation of the nozzle shown Accordingly, an important object of the invenin Fig. 5, with the cover plate in position; tion is to provide a channel cementing machine Fig. 8 is a side elevation of the nozzle shown 49 of. the extruding type by means of which the cein Fig. 6 with the plates in position; ment may be applied expeditiously in just the Fig. 9 shows a modified form of the nozzle of desired quantities and without danger of soiling Fig. 5;

the adjacent parts of the shoe. Fig. 10 is an elevation looking-at the leading, 5 For a machine of this type, a nozzle will be edge of the nozzle shown in Fig. 9, and employed which is adapted to enter the channel Fig. 11 is a plan view of a fragment of a shoe and to apply cement to the bed of the channel sole, showing the flap in lifted position and illusandalso to the inner face of the channel'flap. trating the application of cement by means of The operator will be able to support the shoe a nozzle such as that shown in Fig. 8, the end- 0' manually so that the bed of the channel, which is portion of which is shown in a section taken on formed in and supported by the sole, is held the line XI-XI of Fig. 8.

firmly against the nozzle. Because of the ir- In the embodiment illustrated in the drawings, regular nature of the channel fiap, however. spea machine frame It) is mounted upon a pedestal cial provision must be made for holding the fiap l2 and supports a cement receptacle H! as well 5 in. coating relation to. the applying nozzle. To asapump casing I6 containing a gear pump by which cement taken from the receptacle I4 is extruded under pressure through a flexible tube I8 to a nozzle 20 by. which it. is applied to the work. A piece of work, such as a shoe '22 mounted on a last, has an outsole attached by stitches positioned at the apex orbottom of a channel cut in the sole." In the cutting of this channel, there is formed a channel flap 25 which is to be cementedto the bed. 28 of the channel in the position which it occupied before the channeling" cut j is, made. The shoe is moved progressively past the nozzle 20 to cause the treatment of successive portions of the channel flap and the cha'nnelibed. Control, of the quantity of cement extruded may be effected in any desired way, as by a'by-pass valve (not shown) adjusted by a thumb screw 29. h The frame I comprises parallelside plates 30 and 32 which are held in spaced relation by aplu rality of shouldered bolts, such as the one, shown at 34, and some of which are utilized as pivots, as will be later described. At the top of the frame andbetween the plates 30 and 32is' mounted a block 35 which is held in position by boltspassing through the holes 38 and which supports a rod 40upon which there is mounted a nozzle carrier 42. This rod 40 may be adjusted in and out, and is held against turning by a pointed screw stud 44. The nozzle carrier is split at its upper end and held in the'desired position on the rod by pinch screws 46' (Fig. 3) A nozzle stem has 'a flange 48 which is supported on spaced flanges 50 formed upon the carrier 42 and to which it is bolted. The connection between the flexible tube 18 and the nozzle stem 5| comprises afitting 52 which confering with the 'drive.

tains a turn valve 54 and is provided with a base 56 secured in tightrelation to the flange48 of the nozzle stem 5| by screws (not shown). The upper end of the fitting is threaded in a T fitting 58 which supports a pressure gage 59 and 'is joined to the tube I8. From Figs. 1, 5, and 7; it will be seen that the nozzle 20 itself has a flange 55 and a nipple 51. This nipple is received in a socket in the lower end of the stem 5| which has a flange 53 held to the flange 5| by screws.

Provision. is made for feeding the work by means of a rubber-tired roll 60 mounted on a stub shaft in an arm 62' which is pivoted on a pin' 64 at the extreme right side of the machine so that the roll may be lifted slightly by the work to accommodate variations in the shape of the shoe.

The pivotal movement of the supporting arm 62 is guided by fitting this arm between theside plates 30 and 32. In order to drive the feed roll 68, the stub shaft on which it is mounted is connected by pinions 66 with a counter shaft 68 journaled in the carrier arm 62. This counter shaft 68 is joined by miter gears I0 to another counter shaft 12 which, in turn, derives power from a main'drive shaft 14 of the machine through spiral gears I6. These gears rotate a short shaft I8 which is joined to the counter shaft I2 by antextensible shaft 80 containing universal joints. This'arrangement gives complete freedom for up-ande down movement of the feed roll fit without inter- In view of the fact that the channel flap 25 lies in all sorts of angular positions with respect to the channel bed 28, and the further'.fact that it is wrinkled and frequently stiff and dry, it has been found desirable to press the flap against theside of the nozzle 20 by means of an oscillated flap pressing finger 82. To this end, the finger is clamped in the lowerarm of the bell crank lever 84 (Fig. 3) which ispivotally supported by depending arms 86 secu'red to the nozzle carrier later described.

" to'the toggle link 92, it is pivotally supported upon a hanger 08 swinging from a pivot 98 in the block 36. A spring I00 siurounding the rod 88 bears .against a portion of the nozzle-supporting block 36 and tends toreturn the finger 82 to a position spaced from the nozzle when there is no work in the machine, this movement being limited by a collar I02.' Thus, when the machine is at rest, there is always plenty of room to bring thechannel flap-into position between the finger and the nozzle or to remove it at the end of a cementing operation. If the flap is turned well back against the sole, then the finger 82 serves also to lift it into cementing position. Y

The rod 88 is joined to thebell crank 84 by a pivot block I04 adjustably'slidable along the rod and held in position thereon by nuts I06. As will be seen from Fig. 4, this block' I04 has a. pivot pin I 08 received in an eccentric sleeve I I0 which may be rotated to determine the exact relation of the operative position of the finger 82 with respect to the nozzle so as to accommodate different thicknesses of channel flaps thereby firmly to support the flap in coating relation to the nozzle without hindering the feed of the work. A rough adjustment of this position, and, hence, of the limits of the range of oscillation, is secured by adjustment of the pivot block I04'-on the rod 88 by means of:

the nuts I06 but, when the'operator changes from one class of work to another, such an adjustment as is provided bythe nuts I0'6 is-s or newhat-slowr There is provided, therefore, the eccentric sleeve IIO, which may be held in adjustedpositionby means of a ratchet I I2 formed on the sleeve and having saw-like teeth to receive a-spring-pressed pawl H4. The saw-toothed ratchet II2 forms an on or attached to a drive pulley H8 which is secured to the shaft 14. This lower arm 120 is outside the frame 30 and is joined to the upper; arm of the lever 90 through a forked portion I22 extending around the edge of the frame. The design is such that the finger 82 is oscillated about 2400 times per minute and the flapi is thereby pressed firmlyv against the side of thenozzle with-' out interfering with the feed of the work: .It will be noted that the drive-shaft T4 is connected to the pump within the ,casing' IB'by pinions I24- 7 For controlling the machine, thereis provided a treadle rod I30 connected at its-lower end to a treadle (not shown) and joined at its upper end to a plate I3I forked at its upper end to-receivea vertical plate I30, the two being pivotally connected to one another and to a lever I54 to be In the'lower portion of the plate E3I is a slot I34 for the reception of a transverse pin between the branches of a forked lever I36; the left end of which is pivoted on a: shouldered V 7 2,098,253 bolt between the side plates ltfi'and 82 of theframe, and the right end of which is joined by a rod I38 to an operating lever I48 for the valve 54 in order thereby to control the flow of cement through the nozzle 28. This operating lever I48 is secured to a rod M2 pivoted in a depending portion I58 of the block 35, and the rod is joined. to the valve 54 through an intermediate shaft I88 having universal joint connections to the valve 55 ing the toggle links.

and the rod I52. One of these universal connections is forked to enable the ready removal of the valve fitting 52 and is held in operative relation by a spring I i-8 surrounding the rod I42. A stop screw I58 determines the closed position of the valve by limiting the upward movement of the operating lever I68 under the action of a spring I52 which is joined at its upper endto the block 38 and at its lower end to the forked lever I38. To limit the downward movement of the treadle rod and the plates HI and 232, the twoare pivotally connected to each other and to a lever I54 having a portion 58 which abuts a stop I58 formed as a part of the frame member. The lever I5 i swings on an eccentric portion of its pivot pin, thus facilitating assembly of the machine by allowing this lever to be brought into correct relation to associated parts by turning the pin.

The same treadle rod I38 is arranged to control the vibrations of the flap-pressing finger 82 by either breaking or straightening the toggle links 92, 96. To this end, the upright plate 32 has a slot I88 which surrounds a pin 962 connect- Wh n the treadle is depressed, the toggle is straightened and the oscillations of the lever 98 are transmitted to the finger 82. When the treadle is released and is raised by the spring 552, then the toggle is broken and the continuing oscillations of the lever 98 are not transmitted to the rod 88, The shape of the lower portion of the slot 188 is such (Fig. 2) that movements of the lever simply oscillate the link 92 about its pivotal connection with the rod 88 without disturbing the plate I32 or the treadle rod I38. t that time, the spring I88 will draw the finger 82 to an inoperative position, away from the nozzle.

The arrangement of the machine is such that the feed roll 68 is held resiliently against the work by a connection to this same treadle rod I30 and, to this end, a lever 5M pivoted in the frame is slotted to receive a block I'BIi which is secured to the lever by a pin ItB, this block surrounding the rod and being held against a stop collar I18 thereon by a spring I'iZ surrounding the treadle rod and bearing against the upper side of the block IE5. The lever I68 is joined to the arm 82 which supports the feed roll 88 by a link I'I. When the operator depresses the treadle, thereby drawing the treadle rod down substantially vertically to a position illustratedin Fig. 1, he first moves the feed roll '68 into contact with the shoe already positioned with respect to the nozzle straightens the toggle to cause oscillation of the flap-pressing finger 82 and then opens the valve 54. Upon reverse movement of the treadle, the opposite action takes place and the valve is closed to stop the flow of cement and the finger 82 is stopped in open position, before the feed roll 88 is lifted from the work by the connection embodying the collar i "iii, the block 968, the lever I84 and the link Ilfi. Thus, the shoe is always moving forward when the finger 82 is oscillated and when the cement is extruded through the nozzle.

The nozzle 28 is positioned in the machine as shown in Figs. 1 and 3 in depending position and is inclined downwardly and forwardly with respect to the direction of movement of work presented thereto so that a removable plate H80 secured to the outlet face of the nozzle lies approximately in a vertical plane passing through the axis of the feed roll. The lower end of the nozzle is tapered heightwise at I82 (Fig. 6) to aid in pushing it into the channel and is formed with a comparatively sharp leading edge I84 (Fig. 11) in which there is an outlet I86 (Figs. 5, 6, and 7) to deliver cement at the bottom of the channel. This cement also lubricates the nozzle, as it were, making it easier to feed the work. The nozzle also has a substantially triangular face I88 through which, at I92, emerges a passage I98 extending down through the nozzle. The outlet I 88 communicates with the passage I98 through a branch passage I81. It is through this. passage I98 that cement is pumped at substantially constant pressure when the valve 54 is opened. As shown in Fig. 3, the shoe is moved away from the operator so that it approaches the leading edge I84 of the nozzle and so that the face I88 and the cover or deflector plate II 80 are upon the trailing face of the nozzle.

It is desired, then, to cause the cement to be applied uniformly upon both the channel'flap 2'5 and the channel bed 28 as well as in the'bottom of the channel. To this end, the cover plate I88 (Fig. 5), corresponding to the plate I I89 and positioned directly to overlie the outlet opening Iil2 of the passage I98, acts as a deflector and cooperates with the face I88 to provide a transverse slot I94 (Fig. '7) forming lateral delivery passages or slots extending from the apexof the tapered endof the nozzle heightwise thereof to a point determined by a shoulder I98 on the cover plate. A series of cover plates having this shoulder positioned at various distances from the pointed lower end may be utilized for channels 4-inch, -inch or %-inch wide. Such nozzles, with their narrow outlet slots, show a notable flexibility in their ability to coact properly with channels, the depth of which varies between different parts of a shoe. Thus, even if the slot is longer than the channel is deep, the cement, due to its cohesiveness, will draw down from the upper end of the slot to the upper edge of the work being coated without being extruded over the edge of the channel flap or the channel base, as the case may be. Were a series of holes employed instead of a slot, the cement extruded from the exposed upper holes would be forced over the edge of the channel flap or the channel base. The cover plate is also provided with a shoulder I98 which is intended to rest upon a shoulder 28!! (Figs. 5 and 7) formed upon the nozzle, thereby to assist in locating the cover plate in exact relation to the triangular face 188 of the nozzle. The area I91 between the two shoulders fits closely against the end face I88. The outline of the triangular portion of the cover plate is slightly smaller than the corresponding outline of the face I88 to avoid any tendency of the edges of the cover plate to scrape off the cement just applied. Further to assist in locating the cover plate upon the nozzle, there may be provided a pin 282 which is received in a. socket 204 in the nozzle. The cover plate will be held in position by a screw 286 having a threaded stem 2II3.. The elliptical opening I92 formed where the passage I98 emerges in the face 1.88

i's'joined to t'he apex of the tool by:means of a shallow groove 2l2 thereby insuring delivery of a suflicient quantity of cement to the bottom of the channel.

When the nozzle is in position in the machine,

the channel flap 26 will be pressed against the plane surface 2 l4, whereas the bed of the channel will beheld against theopposite surface of the nozzle terminating in the edge 2H5. Under some conditions, the bed 28 of the channel will not. be flat but will be curved away from the plane of the bottom of the sole toward the shoe upper." This'will be found in womens c1ose-' edged shoes and may result in a different curvature of the channel bed around the forepart than that which isin the shank. In order to adapt the nozzle for best operation with a close-edged shoe, it isfound desirable to change, the nozzle construction'to that shown in Figs. 9 and 10.

where parts similar to those shown in Fig. 5 have been given similar numerals to which 1000 has been added. This nozzle differs from that shown in Fig. 5 in having an inner or back surface which is curved inwardly to form a valley terminating in the curved edge 220 which will be close to the shape of, the channel bed around the forepart'of the shoe and will approximate that found in the shank of the shoe. With this construction, the cover plate H80 is also provided with a pointed end having a curved edge 222. It will be noted that the shoulder H96 in the cover plate provided for this style of nozzle is :not exactly parallel to the shoulder H98 but deviates from that relation in accordance with the need for providing outlet passages which will coact with the widths ofthe channel flap and the channel bed.-

a In constructing nozzles of Fig. 5,.it is common to do some hand filing where the, groove 2I2 joins the elliptical outlet opening 192 and sometimes this is done carelessly, bringing the opening. nearer to one side edge than the other. This renders unequal the frictional resistance offered tothe cement flowingto the two sides and results in a somewhat uneven distribution of cement upon the two sides of the channel. It is avoided by forming a recess 224 (Figs. 6 and 9) in the end face of the nozzle which is separated from the edge of the-nozzle by a ledge 226 of uniform width, thus. insuring an even distribution of cement. In the form shown in Fig. 9; this recess is joined to the tip of the nozzle by a groove 228 corresponding to the groove 2l2 in Fig. 6. 7

When the nozzle is to be employed for cements of the polymerized chloroprene type, one form of which is marketed under the name DuPrene, then a nozzle construction such as that shown in Figs. 6 and 8 may be advantageously employed and has a pair of cover'plates or deflectors 230 and 232. These deflectors, which are kept in alinement with one another by means of a stud 234 entering a socket 236, are mounted for slight lateral movement around a cylindrical portion 208 on the screw 206. To this end, the shoulder 240 on the inner plate 238 is spaced slightly from the shoulder 280 on the nozzle. The intermediate plate'230, having a surface 241 in close contact the type shown in r mediate plate is also provided with an elongated opening. 244 opposite the outlet end of the passage |98 (Fig.11) so that a portion of the cement passes directly to the slot 25l (Figs. 8 and 11) between the lower portion of the intermediate plate 230 and the face of the outer plate 232. This slot is limited by a shoulder 246 upon the rear face of the plate 230. Thus, two slots are formed providing two lateral passages upon each face of the nozzle, these being separated by the thin lower end 248 of the intermediate plate 230. The edges of the lower end 248 are serrated at 258 thereby to provide a sort of spreading action for the cement which is delivered to the work from the slot 249. The generally triangular lower the leather of the channel flap and channel bed while that extruded through the second slot 25! is enabled thereby to stick even more readily to these already coated surfaces, and to be applied in uniform and predetermined quantities.

The operation of the machine has already been set forth in connection with the description of the control devices joined to the treadle rod I30.

This application is a division of my application Serial No. 43,064, filed October 1, 1935, in which are claimed features of the extruding nozzle.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: r g

1. In a machine for cementing the channels of the soles of lasted shoes, a tapered nozzle adapted to be inserted in the channel of a shoe sole, a driven feed wheel on one side of the nozzle coacting with the upper of a lasted shoe presented thereto to carry the shoe edge past the nozzle, and means located on the other side of the nozzle for holding the flap against the nozzle.

7 2. In a channel cementing machine, a tapered nozzle adapted to be inserted in the channel of Y 3. In a channel cementing machine, a depending nozzle adapted to be inserted in the channel of a shoe sole, a drivenfeed wheel mounted on said machine for movement substantially vertically to bring it against the upper of a shoe presented to the nozzle, and means for pressing the channel flap against the nozzle.

14. In a channel cementing machine, means for applying cement to the channel, a pivotally supported flap-engaging finger holding the flap against the applying means, means including a spring to oscillate said flap-engaging finger, a driven'feed wheel movableinto and out of engagement with the upper of the shoe, and a zle adapted to be inserted in the channel as a shoe is presented to the machine, a valve controlling the fiow of cement to said nozzle, an oscillating flap-engaging finger to hold the channel flap against the side of the nozzle, and a treadle for bringing said finger into operative engagement with the work and for then opening the valve.

6. In a channel cementing machine, means for applying cement to the channel, a flap-engaging member holding the flap against the applying means, means for pivotally supporting said flapengaging member on the machine, and means pivotally connected to said member for imparting an oscillation thereto, one of said pivotal means having an eccentric portion whereby the limits of vibration of the flap-engaging member with respect to the nozzle may be adjusted.

'7. In a channel cementing machine, cement applying means, a flap-engaging finger mounted on pivotal means, means for imparting an oscillation to said finger including pivotal connecting means, one of said pivotal means having an eccentric portion and a serrated portion, and a pawl associated with said serrated portion thereby to hold the pivot in adjusted position.

8. In a channel cementing machine, cement applying means, a pivotally mounted fiap-en-.

gaging finger, power operated means for oscillating said finger, an operative connection between said finger and said power operated means comprising a toggle, and means for straightening said toggle to cause the movement of the power operated means to be transmitted to the finger.

9. In a channel cementing machine, cement applying means, a pivotally mounted flap-engaging finger, power operated means for oscillating said finger, an operative connection between said finger and said power operated means comprising a toggle, and means for straightening said toggle to cause the movement of the power operated means to be transmitted to the finger, said toggle-straightening means being provided with a slot constructed and arranged to permit idle movement of the toggle pivot when the toggle is broken without transmitting said movement to the straightening means.

10. In a channel cementing machine, cement applying means, a pivotally mounted flap-engaging finger, power operated means for oscillating said finger, an operative connection between said finger and said power operated means comprising a toggle, and means for straightening said toggle to cause the movement of the power operated means to be transmitted to the finger, the portion of said connection between the toggle and the finger being spring pressed to position the finger away from the nozzle, whereby when the toggle is broken the finger will be moved into inoperative position.

11. In a machine for cementing the channels of soles attached to shoes, a cement applying nozzle, means for forcing cement through said nozzle, a power-oscillated flap-lifting finger positioned at one side of said nozzle, and a powerdriven shoe-engaging feed roll positioned at the other side of the nozzle.

12. In a machine for cementing the channels of soles attached to shoes, a cement applying nozzle, means for forcing cement through said nozzle, a power-oscillated flap-lifting finger positioned at one side of said nozzle, a power-driven work-engaging feed roll positioned at the other side of the nozzle, said feed roll being movable into and out of engagement with the work, control means for said oscillating finger, and means for moving the feed roll into contact with the work before oscillations are imparted to the finger.

13. In a machine for cementing the channels of soles attached to shoes, a cement applying nozzle, means for forcing cement through said nozzle including a control valve, a power-oscillated flap-lifting finger positioned at one side of said nozzle, a power-driven work-engaging feed roll positioned at the other side of the nozzle, said feed roll being movable into and out of engagement with the work, control means for said oscillating finger, and means for moving the feed roll into contact with the work before oscillations are imparted to the finger and before said valve is opened.

WILBUR L. MACKENZIE. 

